National Instruments PXI-5650, Процедура калибровки

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CALIBRATION PROCEDURE
NI PXI-5650/5651/5652
This document describes the processes to calibrate the NI PXI-5650/5651/5652 (PXI-5650/
5651/5652) RF signal generator. This document provides performance tests to verify whether
the instrument is performing within the published specifications. For more information about
calibration, visit
ni.com/calibration
.
Contents
Required Software .................................................................................................................... 2
Related Documentation ............................................................................................................ 2
Password................................................................................................................................... 2
Calibration Interval................................................................................................................... 2
Test Equipment......................................................................................................................... 3
Test Conditions......................................................................................................................... 5
Calibration Procedures ............................................................................................................. 5
Initial Setup....................................................................................................................... 6
Characterizing the Test System ........................................................................................ 6
Characterizing the Spectrum Analyzer..................................................................... 6
Verification....................................................................................................................... 8
Validating the ALC Limits Table............................................................................. 8
Verifying Frequency Accuracy ................................................................................ 9
Verifying High Power Level Accuracy .................................................................... 9
Verifying Low Power Level Accuracy..................................................................... 11
Verifying Single Sideband Phase Noise at 10 kHz Offset ....................................... 13
Verifying Nonharmonics at 0 dBm to -20 dBm Output Power................................ 15
Optional Verification........................................................................................................ 19
Verifying Harmonics at 0 dBm (Functional Test).................................................... 19
Verifying Harmonics at -50 dBm (Functional Test) ................................................ 21
Verifying Subharmonics on the PXI-5652 at 0 dBm (Functional Test)................... 23
Verifying Subharmonics on the PXI-5652 at -50 dBm (Functional Test) ............... 25
Adjustment........................................................................................................................ 27
Adjusting ALC ......................................................................................................... 27
Adjusting Attenuators............................................................................................... 28
Adjusting ALC Limits .............................................................................................. 29
Adjusting Frequency Accuracy ................................................................................ 30
Updating Calibration Date and Time................................................................................ 30
Appendix A: Calibration Utilities............................................................................................. 31
Calibration VI References ................................................................................................ 31
Worldwide Support and Services ............................................................................................. 31